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4r, _ CAPACITY 5,000 g PRECISION UNDERGROUND TANK TESTING RESULTS Patent Pending :WK R 1 Prem. UnI. 5K PAGE 2 � 1T * 787 SHORT REPORT FORM - TEST PROCEDURES `.dST DATE: 02/18/1988 Copyright 1985 Ni.E TECqNOLOGY, INC. PROPRIETARY COMPUTERIZED PRINTOUT OF DIGITAL LEAKAGE RATE DATA Tank owner - OESERT PETROLEW1 Tank Number - 91 PREM UNL SK ltcosurement t 14 - Cate of Teat 02/16/1988 Time of measurement -13:31:24 Tank Temperature - 57.8573 degrees F Tank Pressure - .1369 p51 eaaic Tank Votume 5000.320 Gallons. Temperature Correction - -6.341 Gallons. Pressure Correction - .004 Gallons. Corrected Volume - 4593.903 Gallons. Volume Change - .GSCG Gallons. - Expected Level Change - .93066 inches Heasured Laval Change - .24173 lnchcs - Total Fluid Level - 1S8.105 inches Primary Apparent Leak - .037 Gallons. - Elapaed time - 00:57:06 ' Primary Apparent.Leak Rate - .039 Gallons/Hour Geometry Band - e1311 Gallons/Hour Secondary Exp.cled Level Change - .931 inches Secondary Apparent Leak - e39 Gallons. Secondary Apparent Leak Rate - .040 Gallons/Hour Stratified Expected Level Changc - .912 inches Stratified Apparent Leak - .036 Gallons. Stratified Apparent Leak Rate - eu Gallons/Hour Averaged measured Level Change .25767 inches. i. Averaged Volume Change .0467 Gallons. I - - - AverogadExpected Level Change - .85771 Inchea. _ - - Averaged Apparent Leak - .033 GalIona., Averaged Apparent Look Rota - .041 Goiions/Hour. - Averaged Stratified Volume Change - .0454 Gallons. I Averaged Expected Stratlfled Level Change - .83457 inches. Averaged Stratified Apparent Leek ^ .031 Gallons.. Averaged Stratified Apparent Leak Rate - .039 Gallons/Hour. i - COMPUTERIZED PLOTS .OF LEAKAGE RATE DATA .1000 .ase .ease .67e0 .6600 a P , .0400 .0200 .8100 m y .0100 -.0200 j -.19300 r -.0100 f NDE TECHINC. PROPRIETARY (806) 322-9827 BATT INC. 3131 FAIRHAVEN DRIVE, BA.KERSFIELD, Cit 93308